Stabilizing topological phases in graphene via random adsorption

Abstract

We study the possibility of realizing topological phases in graphene with randomly distributed adsorbates. When graphene is subjected to periodically distributed adatoms, the enhanced spin-orbit couplings can result in various topological phases. However, at certain adatom coverages, the intervalley scattering renders the system a trivial insulator. By employing a finite-size scaling approach and Landauer-Büttiker formula, we show that the randomization of adatom distribution greatly weakens the intervalley scattering, but plays a negligible role in spin-orbit couplings. Consequently, such a randomization turns graphene from a trivial insulator into a topological state.

5 pages and 3 figures

References in corpus (12)

• The electronic properties of graphene
• Substrate-induced band gap opening in epitaxial graphene
• Time Reversal Polarization and a Z_2 Adiabatic Spin Pump
• Quantum Anomalous Hall Effect in Graphene from Rashba and Exchange Effects
• Topological Anderson Insulator
• Spin current and polarization in impure 2D electron systems with spin-orbit coupling
• Electrically tunable quantum anomalous Hall effect in 5d transition-metal adatoms on graphene
• Magnetic and Electronic Properties of Metal-Atom Adsorbed Graphene
• Microscopic theory of quantum anomalous Hall effect in graphene
• Three-dimensional phase diagram of disordered HgTe/CdTe Quantum spin-Hall wells
• Band gap engineering in graphene and hexagonal BN antidot lattices: A first principles study
• Tunable thermopower in a graphene-based topological insulator

Cited by in corpus (57)

• Graphene Spintronics
• Topological Phases in Two-Dimensional Materials: A Brief Review
• Quantum Anomalous Hall Effect in Graphene Proximity Coupled to an Antiferromagnetic Insulator
• Magnetic Insulator-Induced Proximity Effects in Graphene: Spin Filtering and Exchange Splitting Gaps
• Tuning the Structural, Electronic, and Magnetic Properties of Germanene by the Adsorption of 3$d$ Transition Metal Atoms
• Giant topological insulator gap in graphene with 5d adatoms
• Tailoring magnetic insulator proximity effects in graphene: First-principles calculations
• Proximity effect in graphene-topological insulator heterostructures
• New Family of Robust 2D Topological Insulators in van der Waals Heterostructures
• Linear Scaling Quantum Transport Methodologies
• Giant thermoelectric effect in graphene-based topological insulators with nanopores
• A controllable valley polarization in Graphene
• Spin Orbit Coupling in Graphene Induced by Heavy Adatoms with Electrons in the Outer-Shell $p$ Orbitals
• Absence of a transport signature of spin-orbit coupling in graphene with indium adatoms
• Evidence for a quantum-spin-Hall phase in graphene decorated with Bi2Te3 nanoparticles
• The topological Anderson insulator phase in the Kane-Mele model
• Multiple Quantum Phases in Graphene with Enhanced Spin-Orbit Coupling: From the Quantum Spin Hall Regime to the Spin Hall Effect and a Robust Metallic State
• Disorder Effects in Topological States -- Brief Review of the Recent Developments
• Direct coupling between charge current and spin polarization by extrinsic mechanisms in graphene
• Laser-beam patterned topological insulating states on thin semiconducting MoS2
• Kubo-Bastin approach for the spin Hall conductivity of decorated graphene
• Topological crystalline insulator phase in graphene multilayers
• Heterostructures of graphene and topological insulators Bi${}_2$Se${}_3$, Bi${}_2$Te${}_3$, and Sb${}_2$Te${}_3$
• Topological Phases in Triangular Lattices of Ru Adsorbed on Graphene: ab-initio calculations
• Transport discovery of emerging robust helical surface states in $Z_2=0$ systems
• Coupled Spin and Pseudo-magnetic Field in Graphene Nanoribbons
• Impact of complex adatom-induced interactions on quantum spin Hall phases
• Electrical control of intervalley scattering in graphene via the charge state of defects
• Evidence for topological proximity effect in graphene coupled to topological insulator
• Intrinsic and substrate induced spin-orbit interaction in chirally stacked trilayer graphene
• Engineering Quantum Spin Hall Effect in Graphene Nanoribbons via Edge Functionalization
• Unveiling multiferroic proximity effect in graphene
• Realization of Quantum Anomalous Hall Effect in Graphene from \textit{n}-\textit{p} Codoping Induced Stable Atomic-Adsorption
• Phase diagrams and edge-state transitions in graphene with spin-orbit coupling and magnetic and pseudomagnetic fields
• Spin-orbit interaction in Pt or Bi2Te3 nanoparticle-decorated graphene realized by a nanoneedle method
• Anomalous Nonlocal Resistance and Spin-charge Conversion Mechanisms in Two-Dimensional Metals
• Spin Hall effect in graphene due to random Rashba field
• Anatomy of topological Anderson transitions
• Alkali doping of graphene: the crucial role of high temperature annealing
• Electronic transport and scattering times in tungsten-decorated graphene
• Emergent Haldane Model and Photon-Valley Locking in Chiral Cavities
• Enhanced quantum coherence in graphene caused by Pd cluster deposition
• Topological Proximity Effects in Graphene Nanoribbon Heterostructures
• Graphene with Rashba spin-orbit interaction and coupling to a magnetic layer: Electron states localized at the domain wall
• Bound States and Supercriticality in Graphene-Based Topological Insulators
• Large Rashba Spin-Orbit Coupling and High-Temperature Quantum Anomalous Hall Effect in Re-Intercalated Graphene/CrI${}_3$ Heterostructure
• Orbital magnetic moments in insulating Dirac systems: Impact on magnetotransport in graphene van der Waals heterostructures
• Graphene Electrodynamics in the presence of the Extrinsic Spin Hall Effect
• Electron-spin to Phonon Coupling in Graphene Decorated with Heavy Adatoms
• Fano-shaped impurity spectral density, electric-field-induced in-gap state and local magnetic moment of an adatom on trilayer graphene
• Realization of Kane-Mele Model in $X{\mathbf{N}}_4$-Embedded Graphene ($X$=Pt, Ir, Rh, Os)
• Genuine topological Anderson insulator from impurity induced chirality reversal
• Quasiparticle spectroscopy as a probe of the topological phase in graphene with heavy adatoms
• Investigating transverse Hall conductances using two-terminal setups
• Chirality reversal at finite magnetic impurity strength and local signatures of a topological phase transition
• Mimicing the Kane-Mele type spin orbit interaction by spin-flexual phonon coupling in graphene devices
• Does the Dirac Cone Exist in Silicene on Metal Substrates?